Furnace



2 Sheets-Sheet 1. D. D. READ.

(No Model.)

VPUBBIMB.

Patented Sept. 3,1895.

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A TTOHNEY.

D. BREAD. PURNAGE..

10-545.723 Patented sept. 3, 1895.1.;

l@ O Q Q Q @lill ATTORNEY.

UNITED STATESl PATENT OFF-ICE.

D. DEAN READ, OF HAGKENSAOK, NEW JERSEY, ASSIGNOR TOJAMES E. CHURCH, OF SAME PLAGE.

FURNACE.

SPECIFlICATION forming part of `Letters Batent N0. 545,723, dated September 3, 1895. VApplication med December 27, 1,893. serainahcacz. (No maden To all whom t may concern:

Be it known that I, D. DEAN READ, a citizen of the United States, residing at Hacken` sack, in the county of Bergen, State of New Jersey, have invented a new and Vuseful Improvement in Furnaces, which improvement is fully set forth in the following specification and accompanying drawings.

My invention consists of a furnace formed of parts of novel construction whereby large heating-surfaces are presented and great volumes of hot air are produced and other features are presented, as hereinafter set forth, and pointed out in the claims.

Figure l represents a vertical section of a furnace embodying myinvention.` Figs. 2, 3, and 4 represent horizontal sections on lines a: x, y y, and a z, respectively,Fig. 1; and Fig. 5 represents aside elevation of a water-tank and indicating-gage of an evaporating device vfor moistening the heated air.

Similar letters of reference indicate corresponding parts in the several figures.'

Referring to the drawings, A designates a furnace, of which B is the combustion-chamber and C the ash-pit. Within lsaid chamber B are air-receiving vertical flues D, whose lower portions are deflected laterally and contracted, forming necks E, whose outer ends pass through the casing ofthe furnace A and are connected with air-supplying pipes F, the latter occupying the lower portion of the chamber G, formed by the exterior casing H, and opening to the atmosphere.

The top of the casing of the furnace A is connected by the pipes J with the chamber K, which thus receives the products of combustion and directs the same to the chimneyflue L, the central pipe J having a damper M therein and forming a direct draft to said Hue L, while the surrounding pipes J form indirect draft with said flue L. The upper ends of the iiues D open into the chamber G, which have the outlets N for directing the heat to the place of service.

In the lower portion of the chamber G are air-supplyin g pipes P, which open from the atmosphere into said chamber. It will be seen that cold or fresh air is thus admitted into the lowerportion of the chamber G by means of said pipes Rand other volumes of cold or fresh Vair are admitted intovthe iiues D and directed into the upper portion of said chamber, the air being highly heated, as is evident, and a large quantity of hot air formed in the chamber G, it being noticed that the bottom wall of the chamber B is Haring or conical, and the air entering the chamber G at the discharge ends of -the pipes P is directed against said wall, which serves to heat the adjacent portion of the chamber G.

The iiues D are many-sided in cross-section, or lnay be oval, thus presenting on their exterior large heating-surfaces to the products of combustionand on their interior similar surfaces to the air admitted thereinto. It will also be seen that the necks E extend in horizontal or somewhat horizontal positions and are subjected directly to the products of combustion, so as to be highly heated, whereby the air entering said necks is similarly affected, in which Icondition it is directed into thegflues, where it is'still further heated and permitted to expand prior to dischargev into the hot-air chamber G. When the damper M of the central pipe J is closed and anindirect draft is secured, the products of combus` tion are diverted to and around the air-nues D, so as to secure the heating of the entire flues from top to bottom. The exterior casing H iiares upwardly, as at H thus expanding the upper portionfof the'chamber AG and increasing the area of said chamber, and thereby providing a large hot-air-storage room. Within said chamber G is a pipe Q, which is supported on brackets R and provided with communicating cups or vessels S, which may be vase-shaped. One end of said pipe passes through the wall of said chamber H and is connected with the tank T, which is supplied with water, the latter being distributed bythe pipe Q into the cups S, thereby exposing a large surface of water to evaporation for effectively moistening the heated air.

Risingfrom and communicating with the portion Q of the pipe Q, outside of the chamber G and adjacent to the tank T, isa glass pipe U, forming a water column,whichv indicates the height of water in the cups S, there being supported back of or adjacent to said pipe a flat piece V of sheet metal or other suitable material, which acts as a dial, so that the height of the water may be perceived.

Interposed between the tank T and pipe Q is a cock or valve WV, whereby the supply of water to the said pipe Q may be adjusted and controlled and may be shut oft at night or other times, as desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A furnace having a combustion chamber with Haring bottom walls, an ash pit, air `fines in said chamberhaving horizontal necks passing through the Wall of said chamber, an exterior casing forming a hot air chamber between it and the combustion chamber and ash pit, air inlet pipes connected with the necks of said tlues, and air inlet pipes leading into said chamber and having their outlet adjacent to the flaring bottom wall of the combustion chamber, said parts being combined substantially as described.

2. A furnace having a combustion chamber and an ash pit, an exterior casing forming a hot air chamber surrounding said combustion chamber and ash pit, air flues with contracted ends in said combustion chamber, having at their lower ends air inlet pipes communicating with the atmosphere, below said combustion chamber, air inlet pipes leading into said hot air chamber adjacent to the bottom walls of said combustion chamber, said air iiues communicating at their upper ends with the hot air chamber, an upper chamber connected by pipes with the combustion chamber, a discharge flue for said upper chamber, and a damper in the central one ot said pipes, said parts being combined substantially as described.

3. A furnace having a hot air cl1amber,a Water pipe leading into said chamber, a cup in said chamber communicating with said pipe, a vertical glass pipe on said water pipe, outside of said chamber,and a vertical plate forming a dial adjacent to said glass pipe, said parts being combined substantially as described.

4. Afurnace having a combustion chamber with Haring bottom walls, an ash pit, air iiues in said chamber, having horizontal and also vertical necks passing through the walls of said chamber, an exterior casing forming a hot air chamber between it and the combustionw chamber and ash pit, air inlet pipes connected with the necks of said flues and air inlet; pipes leading into said chamber and having their outlets adjacent to a flaring bottom wall of the combustion chamber, all of said parte being combined together with the pipes for the escape of the products of combustion, substantially as described.

5. A furnace havinga combustion chamber with flaring bottom walls, an ash pit, air fines in said chamber having horizontal and also vertical necks passing through the walls of said chamber, an exterior casing forming a hot air chamber, between it and the combustion chamber and ash pit, airinlet pipes leading into said chamber, and having their outlet adjacent to the Haring bottom wall of the combustion chamber, and outlet pipes for the articles of combustion, all of the parts being combined substantially as described.

D. DEAN READ.

'Vitnesses:

JAMES E. CHURCH, J. C. VAN HORN. 

